ethyl 4,4,5,5,5-pentafluoro-3-hydroxypentanoate

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which were used directly in the next step. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which were used directly in the next step. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which were used directly in the next step. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained which

Conditions: temp:140.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: Ethyl 4,4,5,5,5-pentafluoro-3-hydroxy-pentanoate (11.9 g from step C) was placed in a 25 ml round-bottom flask and phosphorpentoxid was added in small portions until the educt was almost completely absorbed. The temperature was raised slowly to 140° C. until a brown syrup was obtained. The flask was connected to a distilling apparatus and the product isolated by distillation at reduced pressure (50 mbar, 50° C.). 5.5 g (25.2 mmol, 50% over 2 steps) were obtained. was almost completely absorbed was obtained the product isolated by distillation at reduced pressure (50 mbar, 50° C.) 5.5 g (25.2 mmol, 50% over 2 steps) were obtained